The level with the moon has a star (B-world), I figured out how to turn the moon, and how to get to the telescope/binoculars. The binoculars requires keys, so I figured that I could use the ones found in High Ground.

Here's how I tried to get them:

1. I activate the fans, grab the box and fly up on the ledge.

2. I jump on the pillars, from the pillars to the beams, and down on the ledge.

3. I walk along the ledge, until I get to the fence, I then jump from the ledge to the pillar in the fence, then a fast jump to the next, and a carefull jump to the ledge in High Ground.

4. I place the box on the structure in the middle, on the ledge close the beginning of the level.

5. I jump from the box and onto the ledge, walk out of the level and go back in.

6. Opens up the way to the keys, jumps from the placed box to the ledge.

7. Walks along the ledge, and drops down on the outside of the level, climbs back into the level area using the ladder outside Man On The Moon.

8. Flies up to the ledge using the fan, and walks to the binoculars.

Now I'm thinking, FINALLY! But.. no. Keys doesn't work, I failed a lot of times on 3. It requires very precise jumps, the margin for error is so small that to pull it off, your jumps must be almost perfect.

All that work, for nothing, and I thought I almost had the star within reach.